“From the beginning, the employees dedicated to Project Titan looked at a wide range of details. That included motorized doors that opened and closed silently. They also studied ways to redesign a car interior without a steering wheel or gas pedals, and they worked on adding virtual or augmented reality into interior displays. The team also worked on a new light and ranging detection sensor, also known as lidar. Lida…
I remember reading about Goodyear releasing a "spherical wheel" concept in early 2016: http://www.popularmechanics.com/cars/a19747/goodyear-eagle-3...
Porsche (and possibly other companies) are already moving in this direction, with newer models featuring computer-controlled rear wheel steering. At low speeds the rear wheels steer in the opposite direction to the front, and at high speeds in the same direction.